The locomotives were not completely successful, having a reputation for being short of steam unless skillfully fired, and the dubious distinction of the highest total locomotive hammerblow of any locomotive class inherited by the LMS upon its formation in 1923.[3] The lack of superheating was a curious omission from a type introduced as late as 1922. This may not have helped their steaming problems.
Disposal
All were withdrawn and scrapped between 1939 and 1945, having been displaced by new Black Five 4-6-0s under the LMS's drive for standardisation.